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Given the function f(x) = 4x - 2, determine each of the following:

 

ex. \({f^{-1}(4)} \)

 

I know this is an inverse function, but I'm not exactly sure the steps I should take. The textbook's answer is \({3 \over 2}\).

Guest Oct 9, 2018

Best Answer 

 #1
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f^-1(4), f(x)=4x-2, 4=4x-2, 4x=6, x=6/4, x=3/2. So, \(f^-1(4)=\frac{3}{2}\).

tertre  Oct 9, 2018
 #1
avatar+3186 
+2
Best Answer

f^-1(4), f(x)=4x-2, 4=4x-2, 4x=6, x=6/4, x=3/2. So, \(f^-1(4)=\frac{3}{2}\).

tertre  Oct 9, 2018

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